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Theanine

Thorne
4.7
★ ★ ★ ★ ★
(1327 ratings)
Theanine 200 mg
Product Image
Score93

A premium Suntheanine supplement for reliable mental focus and stress management.

How scoring works
Quantity:90 Capsule(s) • (90 servings)
Goals:
Stress Relief
Productivity Boost
Brain Health
Cognitive Support
Mental Focus
Mood Support
Sleep Support

Score 93

A premium Suntheanine supplement for reliable mental focus and stress management.

How scoring works
$68.00($0.75 per serving)
Pure Formulas
$ 68.00
Amazon
$ 68.00
Vitacost
$ 68.00
iHerb
$ 68.00
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Analysis

Each capsule provides 200mg of high-purity L-theanine to support mental composure. It helps promote alpha brain wave activity, which is linked to a 'relaxed but alert' state.

The quality of the raw material ensures you are getting a pure isomer for optimal biological activity. This is an elite choice for those who prioritize the most reliable and studied ingredients.

Pros

  • Uses patented Suntheanine
  • High therapeutic dose
  • Professional-grade quality
  • Supports relaxation without fatigue

Cons

  • High price point
  • Single-ingredient formula

Warnings

  • Best taken away from high-protein meals
  • Store in a dry location

Nutrient quality

99 Highest impact

Utilization of the branded Suntheanine form ensures maximum isomeric purity and consistent neurological activity. The 200mg dose is highly meaningful for achieving measurable effects on mental relaxation.

Ingredient transparency

100 Highest impact

Active ingredients and dosages are clearly disclosed with no proprietary blends used. The branded ingredient labeling provides clear confirmation of the raw material source and quality.

Customer satisfaction

97 Highest impact

Exceptional ratings across a large volume of reviews confirm that the product is effective and reliable. Users consistently mention success with using it for relaxation and focus.

Value for money

71 High impact

The cost per serving is significantly higher than generic options, reflecting the premium professional-grade branding. While quality is unmatched, the overall value is lower due to the extreme price point.

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Goals

Stress Relief
Impact
Highest effect
A+ Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality

Suntheanine branded L-theanine at 200mg supports mental focus and a relaxed neurological state. This patented form is one of the most well-validated ingredients for inducing alpha brain wave activity.

The single-ingredient approach ensures maximum therapeutic depth and unmatched purity for the relaxation goal. Professional-grade manufacturing and transparent disclosure reflect the high quality of this targeted amino acid supplement.

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Productivity Boost
Impact
Highest effect
A+ Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality

Suntheanine supports a state of calm focus and improved concentration by promoting alpha brain wave activity. This branded form of L-theanine provides 200mg per serving, which appears well-aligned with clinical goals for productivity support.

The pure L-isomer ensures maximum biological activity without the overstimulation common in caffeine products. This single-ingredient approach is highly effective for those seeking a reliable and clean cognitive tool for demanding mental tasks.

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Brain Health
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Suntheanine provides a highly purified and clinically studied form of L-theanine for supporting mental calm and focus. The 200mg dosage appears perfectly aligned with research for achieving optimal neurological effects.

Utilizing this gold-standard nootropic may contribute to better concentration and stress resilience.

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Cognitive Support
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

This professional-grade supplement features 200 mg of Suntheanine, the most researched and clinically validated form of L-Theanine. Suntheanine is standardized for high isomeric purity to ensure the consistent promotion of alpha brain wave activity.

Providing a therapeutic dose of this specific amino acid may contribute to mental clarity and stress reduction without causing drowsiness. It represents a gold-standard option for those seeking high-quality, targeted cognitive support.

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Mental Focus
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Thorne L-Theanine utilizes the premium Suntheanine form to provide a standardized 200mg dose for non-stimulant focus support. This single-ingredient formula is designed to promote a state of calm alertness by increasing alpha brain wave activity.

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Mood Support
Impact
Highest effect
A+ Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

This supplement features 200mg of Suntheanine, which is a highly purified and researched form of L-theanine for supporting relaxation. By inducing alpha brain wave activity, it may contribute to an improved emotional response and a calm mental state under pressure.

The 200mg dosage is perfectly aligned with clinical research for achieving meaningful therapeutic benefits for stress. This encapsulated option offers an exceptionally clean and efficient strategy for individuals seeking high-quality mental calm.

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Sleep Support
Impact
Highest effect
A- Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Suntheanine provides a patented and high-purity source of L-Theanine for mental relaxation.

This amino acid supports a calm state of mind without causing heavy sedation, making it suitable for evening wind-down.

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Ingredients

IngredientAmount per serving
Suntheanine (L-Theanine)
 200 mg
Gluten Free Adults 18–50
Report overview
Theanine (L-Theanine) · 200 mg OverallScore90
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD+ Value
This premium supplement uses high-purity Suntheanine® to provide 200mg of L-Theanine per serving. It is designed for discerning users who prioritize professional-grade ingredients and high manufacturing standards.
View ingredientView products
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L-Theanine 200 mg Double Strength

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L-Theanine 200 mg

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Offers high-potency theanine with excellent verified transparency and purity at an even more affordable price. This clean formulation is perfect for achieving alert focus and calmness on a budget.
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L-Theanine 100 mg

California Gold Nutrition
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(23398 ratings)
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Double Strength L-Theanine 200 mg

NOW
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(41779 ratings)
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Suntheanine L-Theanine 100 mg

Natural Factors Stress-Relax
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The use of branded Suntheanine in a high-count format ensures consistent results and excellent long-term affordability. It balances premium material sourcing with sustainable value for daily users.
Other sellers (2)
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ZenMind

NutriCology
4.6
★★★★★
(285 ratings)
Combines high-purity GABA with Suntheanine for superior multi-pathway modulation of the central nervous system. This synergy is more effective at inducing deep relaxation than a single-ingredient formula.
Other sellers (3)
95 Performance

Suntheanine L-Theanine 125 mg

Natural Factors Stress-Relax
4.7
★★★★★
(1437 ratings)
Features an increased dose of 250mg of branded Suntheanine, providing superior support for cognitive composure and sleep quality. The higher concentration ensures more powerful therapeutic results.
Other sellers (2)
92 Performance

Anxiety & Stress Relief

Nature's Bounty
4.5
★★★★★
(10003 ratings)
Includes high-dose standardized Ashwagandha to manage physical stress markers alongside theanine's mental benefits. This dual-action approach provides broader physiological support for overall composure.
Other sellers (2)
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